XH-M125 5W Single Channel Audio Amplifier Board

XH-M125 5W Single Channel Audio Amplifier Board is a compact and efficient mono amplification module engineered for DIY audio projects and portable sound systems. This reliable board delivers clear 5W audio output from a single channel, making it ideal for small speakers and intercom builds. Consequently, hobbyists deploy it widely in miniature radios, voice prompt modules, and custom electronic sound effect generators. Furthermore, the straightforward circuit design ensures seamless integration with standard audio sources and microcontrollers. Therefore, developers can quickly add audible feedback to their prototypes without complex multi-stage wiring.

Key Features:

• High Efficiency: Delivers robust single-channel amplification while minimizing thermal dissipation during continuous operation.
• Compact Layout: Features a small footprint that fits easily inside tight enclosures and custom DIY project boxes.
• Stable Performance: Utilizes quality electronic components to ensure low distortion and clean audio signal reproduction.
• Simple Connectivity: Provides clearly labeled input and output terminals for fast, error-free wiring.
• Versatile Power Compatibility: Operates efficiently across standard low-voltage DC power supplies commonly found in embedded systems.

Technical Specifications:

• Amplifier Type: Single Channel Mono Audio Amplifier
• Output Power: 5W max
• Operating Voltage: 3.7V to 5V DC
• Load Impedance: 4 Ω to 8 Ω
• Signal to Noise Ratio: High fidelity audio output with minimal background hiss

Mechanical Specifications:

• Board Material: High-grade FR4 double-sided glass epoxy PCB
• Terminal Type: Screw terminals and solder pads for secure connections
• Mounting Holes: Pre-drilled corner holes for easy chassis installation
• Cooling: Passive cooling via efficient PCB layout and component spacing

Dimensions:

• Board Length: ≈ 40 mm
• Board Width: ≈ 30 mm
• Board Height: ≈ 15 mm
• Weight: ≈ 10 g

Pinout and Wiring:

• VCC: Positive DC power supply input (typically 5V).
• GND: Common ground connection for power and audio signals.
• IN: Audio input signal line from sound sources or microcontrollers.
• OUT+/OUT-: Speaker output terminals for connecting a 4 Ω or 8 Ω speaker driver.
• Note: However, always verify power supply polarity before energizing the board to prevent permanent circuit damage.

Datasheet Reference:

• Download Audio Amplifier IC Datasheet

Commonly Used in:

• Portable Radios: Amplifying radio receiver output for clear personal listening.
• Voice Prompts: Driving speakers in automated vending machines and security announcements.
• DIY Boomboxes: Building miniature standalone audio players for MP3 modules.

Applications:

• Embedded Sound Systems: Adding audible alerts and synthesized speech to microcontroller projects.
• Educational Electronics: Teaching students basic audio amplification circuits and speaker matching.
• Intercom Projects: Powering small speaker-microphone setups for short-range communication.

Equivalent Models:

• PAM8403 Dual Channel Amplifier: A popular stereo alternative offering 3W per channel output, although it requires two speaker connections.
• LM386 Mono Amplifier Board: A classic single-channel amplifier module utilizing standard DIP IC architecture.
• TPA3110 Digital Amplifier Board: A higher-power class-D audio module suited for more demanding speaker systems.

Package Includes:

• 1 x XH-M125 5W Single Channel Audio Amplifier Board